MD039 - no-space-in-links

Description

This rule is triggered when a link contains spaces at the beginning or end of the link text. The link text is the portion inside the square brackets.

Rationale

Consistent formatting makes it easier to understand a document. Spaces at the beginning or end of link text are usually accidental and can look awkward when rendered.

Examples

Invalid

# Links with Spaces

This is a [ link with leading space](https://www.example.com/).

Here is [link with trailing space ](https://example.org/page) in a sentence.

And [ spaces on both sides ](https://example.net/) is also wrong.

Valid

# Valid Links

This is a [properly formatted link](https://www.example.com/).

Here is [another link](https://example.org/page) in a sentence.

Reference links [like this][ref] are also fine.

[ref]: https://example.com/reference